Do yourself a favor and bookmark this video in case sadness strikes. It's two minutes of pure joy brought to you by a pair of twins who have spent way too much time playing "Just Dance 2".
One twin's got the moves while the other dominates on vocals. It's always nice when the talent is evenly distributed.
By the way, I'm still on the lookout for videos of kids (0-5) dancing for my compilation video. If you've got something good, email me at firstname.lastname@example.org.